Built-in types are the fundamental types, i.e., integral, floating, and void.

kind(1) = error, kind(2) = unknown, kind(3) = void, kind(4) = boolean,

kind(5) = char, kind(6) = unsigned char, kind(7) = signed char

kind(8) = short, kind(9) = unsigned short, kind(10) = signed short

kind(11) = int, kind(12) = unsigned int, kind(13) = signed int,

kind(14) = long, kind(15) = unsigned long, kind(16) = signed long,

kind(17) = long long, kind(18) = unsigned long long, kind(19) = signed long long,

kind(20) = __int8, kind(21) = __int16, kind(22) = __int32, kind(23) = __int64, // Microsoft specific

kind(24) = float, kind(25) = double, kind(26) = long double,

kind(27) = _Complex float, kind(28) = _Complex double, kind(29) = _Complex long double, //C99 specific

kind(30) = _Imaginary float, kind(31) = _Imaginary double, kind(32) = _Imaginary long double, //C99 specific

kind(33) = wchar_t, // MS specific

kind(34) = decltype(nullptr), // C++11